Invention Grant
US08259145B2 Image forming apparatus with scanning position corrected by non-imaging laser beam
有权
具有通过非成像激光束校正的扫描位置的图像形成装置
- Patent Title: Image forming apparatus with scanning position corrected by non-imaging laser beam
- Patent Title (中): 具有通过非成像激光束校正的扫描位置的图像形成装置
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Application No.: US12785385Application Date: 2010-05-21
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Publication No.: US08259145B2Publication Date: 2012-09-04
- Inventor: Noriyuki Chino , Yuji Uramoto , Shoji Kanemura , Kota Kiyama , Junji Yasuda , Katsuhiko Takano , Yoshinobu Sekiguchi , Noboru Koumura
- Applicant: Noriyuki Chino , Yuji Uramoto , Shoji Kanemura , Kota Kiyama , Junji Yasuda , Katsuhiko Takano , Yoshinobu Sekiguchi , Noboru Koumura
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2009-124071 20090522; JP2010-116211 20100520
- Main IPC: B41J2/47
- IPC: B41J2/47 ; B41J2/435
Abstract:
An image forming apparatus capable of enhancing the accuracy of the scanning position of a laser beam to thereby obtain a more precise image. Optical sensors detect reflected light from a surface of a photosensitive drum. During image formation, the apparatus detects the scanning speed of the laser beam in a main scanning direction based on detection signals from the respective optical sensors in each of divisional sections of an image forming area in the main scanning direction. The apparatus corrects magnification of the image in the main scanning direction, based on results of detection of the scanning speed of the laser beam in the main scanning direction.
Public/Granted literature
- US20100295917A1 IMAGE FORMING APPARATUS Public/Granted day:2010-11-25
Information query
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